"There are easier ways to get rid of a problem roommate without bringing down half the block." He really hoped the joke was just that--a joke--and Raven wasn't building bombs anywhere there were people.

Earthquakes that could bring down the block were quite enough to deal with. They didn't need friendly fire, too.

The look Jess gave the pile of scrap turned inquiring. "You're planning on rebuilding it?" he asked, despite himself. He had an idea Raven was pulling in all manner of parts and building away in her makeshift workshop, but he was vague on the details of her latest fix-it. A glance at a clock would be a hell of a lot quicker than marking the positions of the sun and doing the mental calculations involved.